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75
1-5. Refueling
1
Before driving
Closing the fuel tank cap
When replacing the fuel tank cap,
turn it until a clicking sound is
heard.
After releasing your hand, the cap
will turn slightly to the opposite
direction.
nFuel types
Use unleaded gasoline. (91 Octane rating [Research Octane Number 96] or
higher)
nFuel tank capacity (reference)
17.2 gal. (65 L, 14.3 Imp.gal.)
nWhen the fuel filler door opener is inoperable
The lever can be used to open the fuel filler
door if the fuel filler door cannot be opened
using the inside switch because the battery is
discharged or for any other reason.
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446
6-1. Specifications
Fuel information
nFuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Lexus has a fuel tank opening that only
accommodates the special nozzle on unleaded fuel pumps.
nIf your engine knocks
lConsult your Lexus dealer.
lYou may occasionally notice light knocking for a short time while accelerating
or driving uphill. This is normal and there is no need for concern.
Your vehicle must use only unleaded gasoline.
IS250
Premium unleaded gasoline with an octane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking. Per-
sistent knocking can lead to engine damage and should be corrected by
refueling with higher octane unleaded gasoline.
IS350
Premium unleaded gasoline with an octane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking and
significantly reduced performance. Persistent knocking can lead to engine
damage and should be corrected by refueling with higher octane unleaded
gasoline.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.
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488
GAS STATION INFORMATION
Auxiliary catch lever
P. 3 0 7
Trunk opener
P. 4 3
Fuel filler door
P. 74
Hood lock release lever
P. 3 0 7
Fuel filler door opener
P. 74
Tire inflation pressure
P. 4 3 9
Fuel tank capacity17.2 gal. (65 L, 14.3 lmp.gal.)
Fuel typeUnleaded gasoline onlyP. 75, 433
Cold tire inflation pressureP. 4 3 9
Engine oil capacity
(Drain and refill)
qt. (L, Imp.qt.)
IS250IS250(2WD models) (AWD models) IS350
Without filter 6.2 (5.9, 5.2)6.3 (6.0, 5.3) 6.2 (5.9, 5.2)
With filter 6.6 (6.3, 5.5) 6.8 (6.4, 5.7) 6.6 (6.3, 5.5)
Engine oil type
Toyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oilP. 434
Recommended oil viscosity: SAE 5W-30